这是有关如何执行文件系统路径的增量完成的快速示例。我已经修改了您的示例，将其组织到一个类中，其中名为的方法
complete_[name]表示顶级命令。
我已将完成功能切换为使用内部readline缓冲区确定整体完成的状态，这使状态逻辑更加简单。路径完成位于
_complete_path(path)方法中，我已经连接了
额外的 命令以对其参数执行路径完成。
我相信代码可以进一步简化，但是它应该为您提供一个不错的起点：
import osimport reimport readlineCOMMANDS = ['extra', 'extension', 'stuff', 'errors', 'email', 'foobar', 'foo']RE_SPACE = re.compile('.*s+$', re.M)class Completer(object): def _listdir(self, root): "List directory 'root' appending the path separator to subdirs." res = [] for name in os.listdir(root): path = os.path.join(root, name) if os.path.isdir(path): name += os.sep res.append(name) return res def _complete_path(self, path=None): "Perform completion of filesystem path." if not path: return self._listdir('.') dirname, rest = os.path.split(path) tmp = dirname if dirname else '.' res = [os.path.join(dirname, p) for p in self._listdir(tmp) if p.startswith(rest)] # more than one match, or single match which does not exist (typo) if len(res) > 1 or not os.path.exists(path): return res # resolved to a single directory, so return list of files below it if os.path.isdir(path): return [os.path.join(path, p) for p in self._listdir(path)] # exact file match terminates this completion return [path + ' '] def complete_extra(self, args): "Completions for the 'extra' command." if not args: return self._complete_path('.') # treat the last arg as a path and complete it return self._complete_path(args[-1]) def complete(self, text, state): "Generic readline completion entry point." buffer = readline.get_line_buffer() line = readline.get_line_buffer().split() # show all commands if not line: return [c + ' ' for c in COMMANDS][state] # account for last argument ending in a space if RE_SPACE.match(buffer): line.append('') # resolve command to the implementation function cmd = line[0].strip() if cmd in COMMANDS: impl = getattr(self, 'complete_%s' % cmd) args = line[1:] if args: return (impl(args) + [None])[state] return [cmd + ' '][state] results = [c + ' ' for c in COMMANDS if c.startswith(cmd)] + [None] return results[state]comp = Completer()# we want to treat '/' as part of a word, so override the delimitersreadline.set_completer_delims(' tn;')readline.parse_and_bind("tab: complete")readline.set_completer(comp.complete)raw_input('Enter section name: ')用法：
% python complete.py Enter section name: ext<tab>extension extraEnter section name: extra foo<tab>foo.py foo.txt foo/Enter section name: extra foo/<tab>foo/bar.txt foo/baz.txtEnter section name: extra foo/bar.txt
*如果用户键入/
以下内容，它将从根目录 *更新 路径：
% python complete.pyEnter section name: extra /Use<tab>/Users/.localized /Users/Shared/ /Users/user1 /Users/user2Enter section name: extra /Users/use<tab>/Users/user1 /Users/user2
